It is composed of jacket joint, oil pipe joint and drilling/Christmas tree, and the drilling/ Christmas tree can be on one side or on both sides. Wellhead and drilling/Christmas tree can be attached with under-well safety valves, above-well safety valves, pneumatic or hydraulic control systems for remote automatic control on the opening or closing of the well. Throttling valve: adjustable or fixed throttling valve. Work pressure: 2000PSI~20000PSI Material grade: AA, BB, CC, DD, EE, FF, HH Nominal diameter: 2 1/16"~4 1/16" Temperature grade: L, P, R, S, T, U, V Performance grade: PR1, PR2 Specification grade: PSL1, PSL2, PSL3, PSL3G, PSL4 Body materials: carbon steel, stainless steel, molybdenum-chrome steel, alloy steel, and various standard and non-standard castings.

We designed and produced the pipe-casing units with the pressure rating from 2000PSI to 20000PSI, to satisfy the requirements on the casing procedures of various sizes in drilling wells and finished wells, and we can design and produce according to users’ special requirements.

The 4-way oil pipe joint is installed on the top of the jacket, when the last jacket is installed, you can install the 2-way oil pipe joint, to support the oil pipe pillar and make the oil pipe suspender or jacket/oil pipe space sealed. For a finished well, the Christmas tree will be installed on the flanges of the 4-way oil pipe joint through the differential-diameter joint of the oil pipes.

The 4-way oil pipe joint is installed on the top of the jacket, when the last jacket is installed, you can install the 2-way oil pipe joint, to support the oil pipe pillar and make the oil pipe suspender or jacket/oil pipe space sealed. For a finished well, the Christmas tree will be installed on the flanges of the 4-way oil pipe joint through the differential-diameter joint of the oil pipes.